Runny Nose
A runny nose — medically rhinorrhea — is one of the most common minor health complaints. Most cases are caused by viral colds or allergies and resolve on their own.
Table of Contents
Quick Facts
- ICD-10: R09.81
- Common causes: Colds, allergies, irritants
Common Causes
- Viral upper respiratory infection (cold)
- Allergic rhinitis (hay fever)
- Non-allergic rhinitis (irritants, temperature changes)
- Sinusitis
- Vasomotor rhinitis
- Spicy food (gustatory rhinitis)
- Pregnancy
- Decongestant overuse (rebound rhinitis)
- Clear watery drainage after head injury (cerebrospinal fluid leak — rare but serious)
Self-Care
- Saline nasal sprays or rinses
- Stay hydrated
- Humidified air
- Avoid triggers
- Over-the-counter antihistamines for allergies
- Decongestants short-term only
When to See a Doctor
- Symptoms lasting more than 10 days
- Worsening after initial improvement (suggests bacterial sinusitis)
- High fever or severe facial pain
- One-sided bloody discharge
- Clear watery drainage after head trauma
Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about a medical condition. If you are experiencing a medical emergency, call your local emergency number immediately.
References
- American Academy of Otolaryngology. Rhinitis Information.